libada/configure.ac

   1 # Configure script for libada.
   2 #   Copyright (C) 2003-2018 Free Software Foundation, Inc.
   3 #
   4 # This file is free software; you can redistribute it and/or modify it
   5 # under the terms of the GNU General Public License as published by
   6 # the Free Software Foundation; either version 3 of the License, or
   7 # (at your option) any later version.
   8 #
   9 # This program is distributed in the hope that it will be useful, but
  10 # WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12 # General Public License for more details.
  13 #
  14 # You should have received a copy of the GNU General Public License
  15 # along with this program; see the file COPYING3.  If not see
  16 # <http://www.gnu.org/licenses/>.
  17
  18 sinclude(../config/acx.m4)
  19 sinclude(../config/multi.m4)
  20 sinclude(../config/override.m4)
  21 sinclude(../config/picflag.m4)
  22 sinclude(../config/unwind_ipinfo.m4)
  23
  24 AC_INIT
  25
  26 AC_CONFIG_SRCDIR([Makefile.in])
  27
  28 # Determine the host, build, and target systems
  29 AC_CANONICAL_BUILD
  30 AC_CANONICAL_HOST
  31 AC_CANONICAL_TARGET
  32 target_alias=${target_alias-$host_alias}
  33
  34 # Determine the noncanonical target name, for directory use.
  35 ACX_NONCANONICAL_TARGET
  36
  37 # Determine the target- and build-specific subdirectories
  38 GCC_TOPLEV_SUBDIRS
  39
  40 # Command-line options.
  41 # Very limited version of AC_MAINTAINER_MODE.
  42 AC_ARG_ENABLE([maintainer-mode],
  43   [AC_HELP_STRING([--enable-maintainer-mode],
  44                  [enable make rules and dependencies not useful (and
  45                   sometimes confusing) to the casual installer])],
  46   [case ${enable_maintainer_mode} in
  47      yes) MAINT='' ;;
  48      no) MAINT='#' ;;
  49      *) AC_MSG_ERROR([--enable-maintainer-mode must be yes or no]) ;;
  50    esac
  51    maintainer_mode=${enableval}],
  52   [MAINT='#'])
  53 AC_SUBST([MAINT])dnl
  54
  55 AM_ENABLE_MULTILIB(, ..)
  56 # Calculate toolexeclibdir
  57 # Also toolexecdir, though it's only used in toolexeclibdir
  58 case ${enable_version_specific_runtime_libs} in
  59   yes)
  60     # Need the gcc compiler version to know where to install libraries
  61     # and header files if --enable-version-specific-runtime-libs option
  62     # is selected.
  63     toolexecdir='$(libdir)/gcc/$(target_alias)'
  64     toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)'
  65     ;;
  66   no)
  67     if test -n "$with_cross_host" &&
  68        test x"$with_cross_host" != x"no"; then
  69       # Install a library built with a cross compiler in tooldir, not libdir.
  70       toolexecdir='$(exec_prefix)/$(target_alias)'
  71       toolexeclibdir='$(toolexecdir)/lib'
  72     else
  73       toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
  74       toolexeclibdir='$(libdir)'
  75     fi
  76     multi_os_directory=`$CC -print-multi-os-directory`
  77     case $multi_os_directory in
  78       .) ;; # Avoid trailing /.
  79       *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
  80     esac
  81     ;;
  82 esac
  83 AC_SUBST(toolexecdir)
  84 AC_SUBST(toolexeclibdir)
  85 #TODO: toolexeclibdir is currently disregarded
  86
  87 # Check the compiler.
  88 # The same as in boehm-gc and libstdc++. Have to borrow it from there.
  89 # We must force CC to /not/ be precious variables; otherwise
  90 # the wrong, non-multilib-adjusted value will be used in multilibs.
  91 # As a side effect, we have to subst CFLAGS ourselves.
  92
  93 m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
  94 m4_define([_AC_ARG_VAR_PRECIOUS],[])
  95 AC_PROG_CC
  96 m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
  97
  98 AC_SUBST(CFLAGS)
  99
 100 AC_ARG_ENABLE([shared],
 101 [AC_HELP_STRING([--disable-shared],
 102                 [don't provide a shared libgnat])],
 103 [
 104 case $enable_shared in
 105   yes | no) ;;
 106   *)
 107     enable_shared=no
 108     IFS="${IFS=         }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
 109     for pkg in $enableval; do
 110       case $pkg in
 111         ada | libada)
 112           enable_shared=yes ;;
 113       esac
 114     done
 115     IFS="$ac_save_ifs"
 116     ;;
 117 esac
 118 ], [enable_shared=yes])
 119 AC_SUBST([enable_shared])
 120
 121 GCC_PICFLAG
 122 AC_SUBST([PICFLAG])
 123
 124 # These must be passed down, or are needed by gcc/libgcc.mvars
 125 AC_PROG_AWK
 126 AC_PROG_LN_S
 127
 128 # Determine what to build for 'gnatlib'
 129 if test ${enable_shared} = yes; then
 130   default_gnatlib_target="gnatlib-shared"
 131 else
 132   default_gnatlib_target="gnatlib-plain"
 133 fi
 134 AC_SUBST([default_gnatlib_target])
 135
 136 # Check for _Unwind_GetIPInfo
 137 GCC_CHECK_UNWIND_GETIPINFO
 138 if test x$have_unwind_getipinfo = xyes; then
 139   have_getipinfo=-DHAVE_GETIPINFO
 140 else
 141   have_getipinfo=
 142 fi
 143 AC_SUBST([have_getipinfo])
 144
 145 # Check for <sys/capability.h>
 146 AC_CHECK_HEADER([sys/capability.h], have_capability=-DHAVE_CAPABILITY, have_capability=)
 147 AC_SUBST([have_capability])
 148
 149 # Determine what GCC version number to use in filesystem paths.
 150 GCC_BASE_VER
 151
 152 # Output: create a Makefile.
 153 AC_CONFIG_FILES([Makefile])
 154
 155 AC_OUTPUT